package _02_Java_JingJie;

public class _18_StringBuilder {
    public static void main(String[] args) {
        StringBuilder s = new StringBuilder("");
        System.out.println("s:" + s);
        System.out.println("s.length:" + s.length());

        System.out.println("~~~~~~~~~~~~~~~~~~~~~~~~~~");

        StringBuilder sb = new StringBuilder("hello");
        System.out.println("sb2:" + sb);
        System.out.println("sb2.length:" + sb.length());
    }
}
